Wrench



March 9, 1926. j i 1,576,365

N. SALVUCCi WRENCH Original Filed Sept. 26, 1924 Patented Mar. 9, 1926.

entree STATES PATENT GHCE.

NATALE SALVUGCI, or nnrnoir, ivrrcnrsa'n, nssren'on or ONE-HALF TO'JOHNw.

I-IEADLEY, an, or KANSAS errnarrssounr.

WRENCH.

Application filed September 26, 1924, Serial No. 740,067. Renewed July24, 1925.

To all whom it may concern:

Be it known that I. NATALn SAINUCCI, a citizen of the United Statesresiding at Detroit, in the county of \Vayne and State of Michigan, haveinvented new and useful Improvements in .Vrenches, of which thefollowing is a specification.

This invention relates to wrenches, and contemplates a structureincluding a fixed jaw, and a self adjusting movable jaw, the latterbeing normally held substantially in spaced parallel relation with thefixed jaw and movable into gripping relation with the fixed jaw whenpressure is applied to the handle of the wrench.

The nature and advantages of the invention will be better understoodwhen the following detailed description is read in connection with theaccompanying drawings, the invention residing in the construction,combination and arrangement of parts as claimed.

in the drawings forming part of this application, like numerals ofreference indicate similar parts in the several views, and whereinFigure 1 is a plan View of the wrench constructed in accordance with thepresent invention.

Figure 2 is a view taken at a right angle to Figure 1.

Figure 3 is a fragmentary view showing the movable aw in its normalposition and partly in section.

Figure 4 is a view similar to Figure 3 showing the i'novable aw in itsactive position. I

Figure 5 is a view of a modified form.

llcfcrringcto the drawing in detail and particularly to Figure 1., 10indicates the handle of the wrench which is formed at its opposite endswith fixed jaws 11 and 12 re spectively. For each fixed jaw there is provided a movable jaw 13, and this jaw "is formed with an offsetbifurcated extension 14: designed to straddle the handle 10. It will benoted that the jaws 11 and 13 are used together, and their adjacentfaces are roughened or serrated as at 15, inasmuch as this end of thewrench is adapted to be used as a pipe wrench, while the jaws 12 and 13are used with nuts, bolts and the like, their adjacent faces beingpreferably smooth. The jaws of each pair are connected by links 16 whichare pivotally associated with said jaws, to allow the movable jaw toautomatically assume. gripping relation with the fixed jaw when pressureis applied to the handle. The bifurcated extension is formed with slots17 which are inclined as shown, and arranged in each slot is a pin 18projecting from the handle 10. By reason of this construction, it willbe manifest that when the handle is moved in the direction indicated bythe arrow in Figure 4:, irrespective of which end of the wrench is used,the pin 18' residing along the inclined slot 17 will force the movablejaw 13 into gripping relation with the fixed jaw in the mannerillustrated in Figure 4. As shown in Figure 3 each movable jaw 13 isprovided with a leaf spring 19, one end of which is secured to said jaw,and the free end of which bears against the. adjacent edge of the handle10. This spring functions to normally hold the jaws in spaced parallelrelation as shown in Figure 3, and to return the jaw to this positionafter pressure has been released from the handle 10.

The wrench shown in Figure 5 is of the same construction as the wrenchhereinabove described, except that the handle 10' is formed with jawsonly at one end thereof. The fixed jaw is indicated at 12 and themovable jaw at 13. These jaws are connected together by links 16, whilethe movable jaw 13 is formed with a bifurcated extension l l slotted asat 17 to receive the pin 18. The wrench just described is used in thesame manner as the wrench shown in Figure 1.

While it is believed that from the foregoing description, the nature andadvantages of the invention will be readily'apparent, I desire to haveit understood that I do not limit myself to what is herein shown anddescribed, and that such changes may be resorted to when desired as,fall within the scope of what is claimed.

What I claim is:

A wrench including a handle, a fixed jaw projecting from one endthereof, a movable jaw spaced from the fixed jaw, links arranged at bothsides of the wrench and having their terminals pivotally connected withboth the fixed and movable jaws, a leaf, spring interposed between thehandle and the adjacent side of the movable jaw, and

utilized to normally hold the movable jaw slots, whereby the movable jawis forced parallel witlrthe fixedj-am aipairof spaced forwardly inadvance of the fixed jaw into obliquely disposed extensions"projecting[grippingrelation when pressure is'applied 10 from one end ofthe movable jaw and slidto the handle.

ably embracing said handle said extensions In testimony whereof I aflixmy signahaving incli'ne'delet's,"and ajpinjproje'cting 't'ure. v v.through the handle and received by "said NATALE SALVUCCI.

